SMA MEDIUM VOLTAGE POWER STATION 500SC-JP - Cleaning the Interior; Checking the Seals

4. Check whether no visual defects are present on the walls, the roof and the support feet of the devices and station
container (e.g. discoloration, dirt, damage, scratches or cracks).
If visual defects are present, repair these immediately.
5. Check the welded joints on the devices for damage.
Contact the SMA Service Line if any welded joints are damaged.
6. Check whether the type label of the MVPowerStation is present, complete and legible.
10.4.2 Cleaning the Interior
Danger to life due to electric shock or electric arc if live components are touched
If the MVPowerStation and its devices are not correctly disconnected, dangerous voltages may be present in the
components which, if touched, will result in death or serious injury.
• Disconnect the MVPowerStation (see Section7.6, page101).
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely.
• Ensure that the MVPowerStation and its devices are voltage-free.
Procedure:
1. Remove dirt and dust from the inverter interior and from all devices.
2. Check the interior for leaks.
If leaks are present, fix them.
3. Remove moisture.
10.4.3 Checking the Seals
Figure 40: Section drawing with top view of a door seal in the inverter (example)
Position Designation
A Seal
B Side panel
C Sealing area
D Hinge
10 Maintenance
SMA Solar Technology AG
System Manual 141MVPS22JP-SH-en-11